DE3336261C2 - Embroidery machine - Google Patents

Abstract

An embroidery machine with a drive device for a needle bar and a needle thread take-up mechanism for producing lockstitch seams from a needle thread and a lockstitch bobbin thread, comprising - a rotating mechanism for a cylinder 14 and a rotating ring 76 attached to it, which has a bobbin for a wrapping thread, - a transmission mechanism 66, 68, 70, 72, 74 for transmitting the rotary movement of a first shaft 64 to the cylinder 14, - a cylinder hat mechanism b with coupling parts through which the upward and downward movement of an L-shaped arm 116 controlled by a cam 118 is transmitted to the cylinder 14 and a holding device which holds the L-shaped arm 116 in a specific raised position by means of a support arm 130 (FIG. 2).

Description

I ³

@ | The needle bar 4 with the needle 10, through whose

When the needle eye 114 is passed through the needle thread, g moves up and down. The movement takes place in the bore φ 89 of the upper cylinder 90 and in the cavity 88 of the II lower cylinder 14 and presser foot 94. The needle 10 II moves down into a bobbin case 99, which is arranged ff below a table T. The needle p moves through embroidery 97 as a textile unl | pad and an opening O and thereby pulls a lower thread (Fig. 2) from a lower thread bobbin in the bobbin case 99.

f | Depending on the upward or downward

% movement of the needle 10 to form the in F i g. 2 || Stick caterpillar shown the corresponding components | § moved up and down Here are the Oberfp thread-oc and the lower thread ot to form a caterpillar Stickiii entangled in caps 97th When the lockstitch seam is formed by the upper thread ac and V. the lower thread oi , the thread spool 84 rotates to | ί _; which of the second caterpillar thread; ' wound up || is to the needle bar 4 simultaneously with the rotary ring % 76, the upper cylinder 90, the presser foot 94, the thread guide eyelet 98 and other associated components in a certain direction as soon as the rotary movement on the rotary ring 76 from the rotary drive (not shown) and the thread bobbin 84 is transmitted. In this case, the second embroidery caterpillar thread y, which is unwound from the rotating thread spool 84, to a first embroidery caterpillar thread ß, z. B. a cord that hangs down through the presser foot opening 95, wrapped around so that the first embroidery thread β is looped around the second embroidery thread y . The second embroidery thread y itself is grasped by the upper thread tx during the embroidery process to form the embroidery bead The structure of the lockstitch embroidery seam produced in this way is shown in FIG. 2 shown

1 sheet of drawings

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Claims (2)

1 2 drawing features solved Patent claims: Due to the coaxial arrangement of the thread bobbin on the rotating ring to the needle bar, a space-saving arrangement 1. Embroidery machine for the formation of lockstitch sewing order for the thread bobbin, of which the second ten and embroidery caterpillars are removed with 5 embroidery caterpillar threads when the embroidery caterpillar is formed is guaranteed - a needle bar to which a needle is attached. an upper thread threading represented by the eye of the needle. The invention is based on these figures is, dung explained in more detail It shows - A bobbin for supplying a Un- io F i g. 1 a longitudinal section through an execution thread, game and - Means for feeding a first stick F i g. 2 shows a schematic representation of an embroidery bead thread pe. - A lower cylinder 14 that can be placed on a textile base and has a presser foot 94 on presser foot with a through hole for 15 is attached to an upper cylinder 90 A the needle, rotating ring 76 is on the upper cylinder 90, as in detail - A drivable rotating ring, which will be explained on a to, rotatably mounted The outer cylinder arranged on the needle bar, a thread bobbin 84 is over a cylinder body 85 to which the presser foot is attached, rotatably mounted on the jacket of the rotating ring 76. is stored, 20 by 85 is with the rotating ring 76 in a certain - A thread spool mounted on the rotating ring, from the direction through a coupling acting in one direction a second embroidery caterpillar thread is supplied, lung 86, which is between a cylinder body 85 of the - A thread guide attached to the rotating ring thread spool 84 and the rotating ring 76 is mounted, Drehzur Guide of the second embroidery thread bar. An external thread 96 on the upper part of the lower from the thread spool to the presser foot, the cylinder 14 being in engagement with an internal thread first caterpillar thread from the second embroidery 92 on the lower part of the upper cylinder 90, in its caterpillar thread is looped, which in turn bore 89 a needle bar 4 can be moved up and down. through the upper thread on the textile backing. In this way, the upper cylinder 90 and the is fixed, lower cylinder 14 with the presser foot 94 from each other 30 separable. On the circumference of the lower part of the rotating ring characterized in that the thread 76 is a retaining ring 100 attached with a thread guide bobbin (84) is mounted coaxially on the rotating ring (76) and rungsöse 98 for an embroidery thread y. A holding between the thread spool (84) and the rotating ring (76) nut 102 is on the lower part of the rotating ring 76 a coupling (86) is arranged, through which the Fa- is screwed underneath the retaining ring 100
denspule (84) with the driven rotary ring (76) 35 In the jacket of the lower cylinder 14 is a vertical one When rotated in one direction, slot 104 is provided. A connecting bolt 106 is 2. Embroidery machine according to claim 1, characterized in the rotating ring 76 by the retaining ring 100 that a needle guide eye for the screws and the tip of the connecting bolt protrudes into the second embroidery thread γ non-rotatably with the rotating vertical slot 104. At the upper end of the upper ring (76) is connected. 40 cylinder 90, the cylinder stroke ring 12 is attached. This has an annular groove 108 on its circumference. A receiving sleeve 110 is between a machine frame 2 and the upper cylinder 90. Through the Na- The invention relates to an embroidery machine according to the delstange 4, a thread channel 112 is drilled through wel- Preamble of claim 1. 45 chen an upper thread α is guided. This will be delivered In the (priority) older than DE-OS 33 17 275 according to thread guide means and not shown published German patent application is threaded into a needle eye 114 of a needle 10. A P 33 17 275.7-26 is such an embroidery machine in front of further embroidery thread /? Is from a bobbin (not beaten, in which the thread spool, of which the shown in more detail) known embodiment also- second embroidery caterpillar thread is unwound, at a 50 if via the thread channel 112 in a cavity 88 the rotating ring circumferential support arm supplied with an axis and hangs through a presser foot opening 95 after is stored. With this embroidery machine you can embroider down. Produce caterpillars in which the first embroidery caterpillar thread When the cylinder lifting ring 12 by actuating a by looping around with the second embroidery thread, cylinder lifting device not shown in detail. which is caught by the upper thread on which the textile un- 55 is lifted, the upper cylinder 90 and the underlay is fixed When the embroidery bead is formed, the presser foot 94 moves upwards. The tip of a ver the thread spool mounted on the support arm for the second binding pin slides in the vertical slot 104. The Embroidery thread on a circular path around the needle upper cylinder 90 and the presser foot 94 can therefore bar can be moved slightly up and down to pull off the second embroidery thread and requires a relatively large amount of free space in order to prevent this eö from your operation of the Zyündcrhubcinrichtur.g. One To be able to perform circular motion. Rotary movement is attached to a rotating ring 76 The object of the invention is therefore to transfer a stick machine gear 78. This leads to a uniform To create ne of the type mentioned, in which a rotation of the components concerned in a certain compact and space-saving arrangement for the thread direction, namely for a rotation of the rotating ring 76, bobbin on which the second caterpillar thread is seen in front of 65 the upper cylinder 90, the presser foot 94, the holding is to achieve. ring 100, the retaining nut 102 and the thread spool 84, In an embroidery machine, this task is arranged on the outer circumference of the rotating ring 76 the preamble of claim 1 is characterized by its.